I have a 30' Jayco Jay flight. This is our first travel trailer. I recently leveled our trailer and when disconnected from my truck it rolled back about 2" and partially crushed my plastic wheel choc...
I use rubber chocks under the tires, and then put my X chocks on after I get situated.. although sometimes they may not get on until the next day.. at home they usually are only put on if the TT is being used as guest house.